.tip-button {
    border: 0;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 20px;
    font-weight: 600;
    height: 2.6rem;
    margin-bottom: -4rem;
    outline: 0;
    position: relative;
    top: 0;
    transform-origin: 0% 100%;
    transition: transform 50ms ease-in-out;
    width: auto;
    -webkit-tap-highlight-color: transparent;
  }
  .tip-button:active {
    transform: rotate(4deg);
  }
  .tip-button.clicked {
    animation: 150ms ease-in-out 1 shake;
    pointer-events: none;
  }
  .tip-button.clicked .tip-button__text {
    opacity: 0;
    transition: opacity 100ms linear 200ms;
  }
  .tip-button.clicked::before {
    height: 0.5rem;
    width: 60%;
    background: $button-hover-color;
  }
  .tip-button.clicked .coin {
    transition: margin-bottom 1s linear 200ms;
    margin-bottom: 0;
  }
  .tip-button.shrink-landing::before {
    transition: width 200ms ease-in;
    width: 0;
  }
  .tip-button.coin-landed::after {
    opacity: 1;
    transform: scale(1);
    transform-origin: 50% 100%;
  }
  .tip-button.coin-landed .coin-wrapper {
    background: radial-gradient(circle at 35% 97%, rgba(3, 16, 50, 0.4) 0.04rem, transparent 0.04rem), radial-gradient(
        circle at 45% 92%,
        rgba(3, 16, 50, 0.4) 0.04rem,
        transparent 0.02rem
      ), radial-gradient(circle at 55% 98%, rgba(3, 16, 50, 0.4) 0.04rem, transparent 0.04rem), radial-gradient(circle at
          65% 96%, rgba(3, 16, 50, 0.4) 0.06rem, transparent 0.06rem);
    background-position: center bottom;
    background-size: 100%;
    bottom: -1rem;
    opacity: 0;
    transform: scale(2) translateY(-10px);
  }
  .tip-button__text {
    color: #fff;
    margin-right: 1.8rem;
    opacity: 1;
    position: relative;
    transition: opacity 100ms linear 500ms;
    z-index: 3;
  }
  .tip-button::before {
    border-radius: 0.25rem;
    bottom: 0;
    content: "";
    display: block;
    height: 100%;
    left: 50%;
    position: absolute;
    transform: translateX(-50%);
    transition: height 250ms ease-in-out 400ms, width 250ms ease-in-out 300ms;
    width: 100%;
    z-index: 2;
  }
  .tip-button::after {
    bottom: -1rem;
    color: white;
    content: "ヾ(≧O≦)〃嗷~"; /*点击后显示的内容*/
    height: 110%;
    left: 0;
    opacity: 0;
    position: absolute;
    pointer-events: none;
    text-align: center;
    transform: scale(0);
    transform-origin: 50% 20%;
    transition: transform 200ms cubic-bezier(0, 0, 0.35, 1.43);
    width: 100%;
    z-index: 1;
  }
  
  .coin-wrapper {
    background: none;
    bottom: 0;
    height: 18rem;
    left: 0;
    opacity: 1;
    overflow: hidden;
    pointer-events: none;
    position: absolute;
    transform: none;
    transform-origin: 50% 100%;
    transition: opacity 200ms linear 100ms, transform 300ms ease-out;
    width: 100%;
  }
  
  .coin {
    --front-y-multiplier: 0;
    --back-y-multiplier: 0;
    --coin-y-multiplier: 0;
    --coin-x-multiplier: 0;
    --coin-scale-multiplier: 0;
    --coin-rotation-multiplier: 0;
    --shine-opacity-multiplier: 0.4;
    --shine-bg-multiplier: 50%;
    bottom: calc(var(--coin-y-multiplier) * 1rem - 3.5rem);
    height: 3.5rem;
    margin-bottom: 3.05rem;
    position: absolute;
    right: calc(var(--coin-x-multiplier) * 34% + 16%);
    transform: translateX(50%) scale(calc(0.4 + var(--coin-scale-multiplier))) rotate(calc(var(
              --coin-rotation-multiplier
            ) * -1deg));
    transition: opacity 100ms linear 200ms;
    width: 3.5rem;
    z-index: 3;
  }
  .coin__front,
  .coin__middle,
  .coin__back,
  .coin::before,
  .coin__front::after,
  .coin__back::after {
    border-radius: 50%;
    box-sizing: border-box;
    height: 100%;
    left: 0;
    position: absolute;
    width: 100%;
    z-index: 3;
  }
  .coin__front {
    background: radial-gradient(circle at 50% 50%, transparent 50%, rgba(115, 124, 153, 0.4) 54%, #c2cadf 54%),
      linear-gradient(210deg, #8590b3 32%, transparent 32%), linear-gradient(150deg, #8590b3 32%, transparent 32%),
      linear-gradient(to right, #8590b3 22%, transparent 22%, transparent 78%, #8590b3 78%), linear-gradient(
        to bottom,
        #fcfaf9 44%,
        transparent 44%,
        transparent 65%,
        #fcfaf9 65%,
        #fcfaf9 71%,
        #8590b3 71%
      ), linear-gradient(to right, transparent 28%, #fcfaf9 28%, #fcfaf9 34%, #8590b3 34%, #8590b3 40%, #fcfaf9 40%, #fcfaf9
          47%, #8590b3 47%, #8590b3 53%, #fcfaf9 53%, #fcfaf9 60%, #8590b3 60%, #8590b3 66%, #fcfaf9 66%, #fcfaf9 72%, transparent
          72%);
    background-color: #8590b3;
    background-size: 100% 100%;
    transform: translateY(calc(var(--front-y-multiplier) * 0.3181818182rem / 2)) scaleY(var(--front-scale-multiplier));
  }
  .coin__front::after {
    background: rgba(0, 0, 0, 0.2);
    content: "";
    opacity: var(--front-y-multiplier);
  }
  .coin__middle {
    background: #737c99;
    transform: translateY(calc(var(--middle-y-multiplier) * 0.3181818182rem / 2)) scaleY(var(--middle-scale-multiplier));
  }
  .coin__back {
    background: radial-gradient(circle at 50% 50%, transparent 50%, rgba(115, 124, 153, 0.4) 54%, #c2cadf 54%),
      radial-gradient(circle at 50% 40%, #fcfaf9 23%, transparent 23%), radial-gradient(circle at 50% 100%, #fcfaf9 35%, transparent
          35%);
    background-color: #8590b3;
    background-size: 100% 100%;
    transform: translateY(calc(var(--back-y-multiplier) * 0.3181818182rem / 2)) scaleY(var(--back-scale-multiplier));
  }
  .coin__back::after {
    background: rgba(0, 0, 0, 0.2);
    content: "";
    opacity: var(--back-y-multiplier);
  }
  .coin::before {
    background: radial-gradient(circle at 25% 65%, transparent 50%, rgba(255, 255, 255, 0.9) 90%), linear-gradient(55deg, transparent
          calc(var(--shine-bg-multiplier) + 0%), #e9f4ff calc(var(--shine-bg-multiplier) + 0%), transparent calc(var(
                --shine-bg-multiplier
              ) + 50%));
    content: "";
    opacity: var(--shine-opacity-multiplier);
    transform: translateY(calc(var(--middle-y-multiplier) * 0.3181818182rem / -2)) scaleY(var(--middle-scale-multiplier))
      rotate(calc(var(--coin-rotation-multiplier) * 1deg));
    z-index: 10;
  }
  .coin::after {
    background: #737c99;
    content: "";
    height: 0.3181818182rem;
    left: 0;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    z-index: 2;
  }
  
  @keyframes shake {
    0% {
      transform: rotate(4deg);
    }
    66% {
      transform: rotate(-4deg);
    }
    100% {
      transform: rotate();
    }
  }